trunnion
Americannoun
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either of the two cylindrical projections on a cannon, one on each side for supporting the cannon on its carriage.
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any of various similar supports for machinery.
noun
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one of a pair of coaxial projections attached to opposite sides of a container, cannon, etc, to provide a support about which it can turn in a vertical
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the structure supporting such a projection
Other Word Forms
Etymology
Origin of trunnion
First recorded in 1615–25, trunnion is from the French word trognon trunk, stump, core (of fruit)
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A failed weld on a valve casing called a trunnion caused the gas leak that forced the plant to close on July 1, he said.
From Reuters • Jul. 21, 2016
Sample military gadget is a machine-gun trunnion block, on which the gun swivels.
From Time Magazine Archive
Early simulations did not include the pin, which was set hi place an inch away from the trunnion.
From Time Magazine Archive
In machining the block into shape, 14 lb. of steel is drilled, planed and ground away before the crude lump becomes a finished 6-lb. trunnion block.
From Time Magazine Archive
On the left trunnion, the letter P. and the initials of the inspecting officer; all the above in one-inch letters.
From Ordnance Instructions for the United States Navy. 1866. Fourth edition. by United States. Navy Dept. Bureau of Ordnance
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
